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Annotation of coherent/e/bin/ckermit/ckuscr.c, revision 1.1

1.1     ! root        1: #ifndef NOICP
        !             2: #ifndef NOSCRIPT
        !             3: char *loginv = "Script Command, 5A(015) 2 Nov 92";
        !             4: 
        !             5: /*  C K U S C R  --  Login script for logging onto remote system */
        !             6: 
        !             7: /*
        !             8:   Copyright (C) 1985, 1992, Trustees of Columbia University in the City of New
        !             9:   York.  Permission is granted to any individual or institution to use this
        !            10:   software as long as it is not sold for profit.  This copyright notice must be
        !            11:   retained.  This software may not be included in commercial products without
        !            12:   written permission of Columbia University.
        !            13: 
        !            14:   Original (version 1, 1985) author: Herm Fischer, Encino, CA.
        !            15:   Contributed to Columbia University in 1985 for inclusion in C-Kermit 4.0.
        !            16:   Author and maintainer since 1985: Frank da Cruz, Columbia University,
        !            17:   [email protected].
        !            18: */
        !            19: 
        !            20: /*
        !            21:   The module expects a login string of the expect send [expect send] ...
        !            22:   format.  It is intended to operate similarly to the way the common
        !            23:   uucp "L.sys" login entries work.  Conditional responses are supported
        !            24:   expect[-send-expect[...]] as with uucp.  The send keyword EOT sends a
        !            25:   control-d, and the keyword BREAK sends a break.  Letters prefixed
        !            26:   by '~' are '~b' backspace, '~s' space, '~n' linefeed, '~r' return, '~x' xon,
        !            27:   '~t' tab, '~q' ? (not allowed on kermit command lines), '~' ~, '~'',
        !            28:   '~"', '~c' don't append return, '~o[o[o]]' octal character.  As with
        !            29:   some uucp systems, sent strings are followed by ~r (not ~n) unless they
        !            30:   end with ~c. Null expect strings (e.g., ~0 or --) cause a short
        !            31:   delay, and are useful for sending sequences requiring slight pauses.
        !            32: 
        !            33:   This module calls externally defined system-dependent functions for
        !            34:   communications i/o, as defined in CKCPLM.DOC, the C-Kermit Program Logic
        !            35:   Manual, and thus should be portable to all systems that implement those
        !            36:   functions, and where alarm() and signal() work as they do in UNIX.
        !            37: */
        !            38: 
        !            39: #include "ckcdeb.h"
        !            40: #include <signal.h>
        !            41: #include <setjmp.h>
        !            42: #include "ckcasc.h"
        !            43: #include "ckcker.h"
        !            44: #include "ckuusr.h"
        !            45: #include "ckcnet.h"
        !            46: 
        !            47: _PROTOTYP( VOID flushi, (void) );
        !            48: 
        !            49: #ifdef MAC
        !            50: #define SIGALRM (1<<10)
        !            51: #undef SIGTYP                          /* put in ckcdeb.h later */
        !            52: #define SIGTYP void
        !            53: #endif /* MAC */
        !            54: 
        !            55: extern int local, flow, seslog, mdmtyp, msgflg, duplex, backgrd, secho, quiet;
        !            56: #ifdef NETCONN
        !            57: extern int network, ttnproto;
        !            58: #endif /* NETCONN */
        !            59: extern long speed;
        !            60: extern char ttname[];
        !            61: 
        !            62: #ifndef NOSPL
        !            63: extern struct cmdptr cmdstk[];
        !            64: extern int techo, cmdlvl;
        !            65: extern int mecho;
        !            66: #endif /* NOSPL */
        !            67: 
        !            68: static int scr_echo;                   /* Whether to echo script commands */
        !            69: 
        !            70: static int exp_alrm = 15;              /* Time to wait for expect string */
        !            71: #define SND_ALRM 15                    /* Time to allow for sending string */
        !            72: #define NULL_EXP 2                     /* Time to pause on null expect strg*/ 
        !            73: #define DEL_MSEC 300                   /* milliseconds to pause on ~d */
        !            74: 
        !            75: #define SBUFL 512              
        !            76: static char seq_buf[SBUFL], *s;                /* Login Sequence buffer */
        !            77: static char fls_buf[SBUFL];            /* Flush buffer */
        !            78: static int got_it, no_cr;
        !            79: 
        !            80: /*  connect state parent/child communication signal handlers */
        !            81: 
        !            82: static jmp_buf alrmrng;                        /* Envir ptr for connect errors */
        !            83: 
        !            84: SIGTYP
        !            85: scrtime(foo) int foo; {                        /* modem read failure handler, */
        !            86:     longjmp(alrmrng,1);                        /* notifies parent process to stop */
        !            87: }
        !            88: 
        !            89: /*
        !            90:  Sequence interpreter -- pick up next sequence from command string,
        !            91:  decode escapes and place into seq_buf.
        !            92: 
        !            93:  If string contains a ~d (delay) then sequenc returns a 1 expecting
        !            94:  to be called again after the ~d executes.
        !            95: */
        !            96: static int
        !            97: sequenc() {
        !            98:     int i;
        !            99:     char c, oct_char;
        !           100: 
        !           101:     no_cr = 0;                         /* output needs cr appended */
        !           102:     for (i = 0; i < SBUFL; ) {         
        !           103:        if (*s == '\0' || *s == '-' || isspace(*s) ) { /* done */
        !           104:            seq_buf[i] = '\0';
        !           105:            return(0) ;
        !           106:        }
        !           107:        if (*s == '~') {                /* escape character */
        !           108:            s++;
        !           109:            switch (c = *s) {
        !           110:                case 'n':  seq_buf[i++] = LF; break;
        !           111:                case 'r':  seq_buf[i++] = CR; break;
        !           112:                case 't':  seq_buf[i++] = '\t'; break;
        !           113:                case 'b':  seq_buf[i++] = '\b'; break;
        !           114:                case 'q':  seq_buf[i++] = '?';  break;
        !           115: #ifdef COMMENT
        !           116: /* The default case should catch these now... */
        !           117:                case '~':  seq_buf[i++] = '~';  break;
        !           118:                case '-':  seq_buf[i++] = '-';  break;
        !           119: #endif /* COMMENT */
        !           120:                case '\'': seq_buf[i++] = '\''; break;
        !           121:                case '\"': seq_buf[i++] = '\"'; break;
        !           122:                case 's':  seq_buf[i++] = ' ';  break;
        !           123:                case 'x':  seq_buf[i++] = '\021'; break;
        !           124:                case 'c':  no_cr = 1; break;
        !           125:                case 'd': {                     /* send what we have & then */
        !           126:                    seq_buf[i] = '\0';          /* expect to send rest after */
        !           127:                    no_cr = 1;                  /* sender delays a little */
        !           128:                    s++;
        !           129:                    return(1);
        !           130:                }
        !           131:                case 'w': {                     /* wait count */
        !           132:                    exp_alrm = 15;              /* default to 15 sec */
        !           133:                    if (isdigit(*(s+1))) { 
        !           134:                        s++;
        !           135:                        exp_alrm = *s & 15;
        !           136:                        if (isdigit(*(s+1)) ) {
        !           137:                            s++;
        !           138:                            exp_alrm = exp_alrm * 10 + (*s & 15);
        !           139:                        }
        !           140:                    }
        !           141:                    break;
        !           142:                }
        !           143:                default:
        !           144:                    if ( isdigit(c) ) {         /* octal character */
        !           145:                        oct_char = (c & 7);     /* most significant digit */
        !           146:                        if (isdigit( *(s+1) ) ) {
        !           147:                            s++;
        !           148:                            oct_char = (oct_char<<3) | ( *s & 7 ) ;
        !           149:                            if (isdigit( *(s+1) ) ) {
        !           150:                                s++;
        !           151:                                oct_char = (oct_char<<3) | ( *s & 7 ) ;
        !           152:                            }
        !           153:                        }
        !           154:                        seq_buf[i++] = oct_char;
        !           155:                        break;
        !           156:                    } else seq_buf[i++] = *s; /* Treat ~ as quote */
        !           157:              }
        !           158:        } else seq_buf[i++] = *s;       /* Plain old character */
        !           159:        s++;
        !           160:     }
        !           161:     seq_buf[i] = '\0';
        !           162:     return(0);                         /* end of space, return anyway */
        !           163: }
        !           164: 
        !           165: /*
        !           166:  Receive sequence -- see if expected response comes,
        !           167:  return success (or failure) in got_it.
        !           168: */ 
        !           169: static VOID
        !           170: recvseq()  {
        !           171:    
        !           172:     char *e, got[7], trace[SBUFL];
        !           173:     int i, l, x;
        !           174:     
        !           175:        sequenc();
        !           176:        l = (int)strlen(e=seq_buf);     /* no more than 7 chars allowed */
        !           177:        if (l > 7) {
        !           178:            e += l-7;
        !           179:            l = 7;
        !           180:        }
        !           181:        tlog(F111,"expecting sequence",e,(long) l);
        !           182:        if (l == 0) {           /* null sequence, just delay a little */
        !           183:            sleep (NULL_EXP);
        !           184:            got_it = 1;
        !           185:            tlog(F100,"got it (null sequence)","",0L);
        !           186:            return;
        !           187:        }
        !           188:        *trace = '\0';
        !           189:        for (i = 0; i < 7; i++) got[i]='\0';
        !           190: 
        !           191:        signal(SIGALRM,scrtime);        /* did we get it? */
        !           192:        if (!setjmp(alrmrng)) {         /* not timed out yet */
        !           193:            alarm(exp_alrm);
        !           194:            while (!got_it) {
        !           195:                for (i = 0; i < l-1; i++) got[i] = got[i+1]; /* Shift over */
        !           196:                x = ttinc(0);           /* Read a character */
        !           197:                debug(F101,"recvseq","",x);
        !           198:                if (x < 0) goto rcvx;   /* Check for error */
        !           199: #ifdef NETCONN
        !           200: #ifdef TNCODE
        !           201: /* Check for telnet protocol negotiation */
        !           202:                if (network &&
        !           203:                    (ttnproto == NP_TELNET) &&
        !           204:                    ( (x & 0xff) == IAC) ) {
        !           205:                    switch (tn_doop((CHAR)(x & 0xff),duplex,ttinc)) {
        !           206:                      case 2: duplex = 0; continue;
        !           207:                      case 1: duplex = 1;
        !           208:                      default: continue;
        !           209:                    }
        !           210:                }
        !           211: #endif /* TNCODE */
        !           212: #endif /* NETCONN */
        !           213:                got[l-1] = x & 0x7f;    /* Got a character */
        !           214:                if (scr_echo) conoc(got[l-1]); /* Echo it */
        !           215:                if (seslog)             /* Log it in session log */
        !           216:                  if (zchout(ZSFILE,got[l-1]) < 0) seslog = 0;
        !           217:                if ((int)strlen(trace) < sizeof(trace)-2 ) 
        !           218:                  strcat(trace,dbchr(got[l-1]));
        !           219:                got_it = (!strncmp(e, got, l));
        !           220:            }
        !           221:        } else got_it = 0;              /* timed out here */
        !           222: rcvx:
        !           223:        alarm(0);
        !           224:        signal(SIGALRM,SIG_IGN);
        !           225:        tlog(F110,"received sequence: ",trace,0L);
        !           226:        tlog(F101,"returning with got-it code","",(long) got_it);
        !           227:        return;
        !           228: }
        !           229: 
        !           230: /*
        !           231:  Output A Sequence starting at pointer s,
        !           232:  return 0 if okay,
        !           233:  1 if failed to read (modem hangup or whatever)
        !           234: */
        !           235: static int oseqret = 0;                        /* Return code for outseq */
        !           236:                                        /* Out here to prevent clobbering */
        !           237:                                        /* by longjmp. */
        !           238: static int
        !           239: outseq() {
        !           240:     char *sb;
        !           241:     int l;
        !           242:     int delay;
        !           243: 
        !           244:     oseqret = 0;                       /* Initialize return code */
        !           245:     while(1) {
        !           246:        delay = sequenc();  
        !           247:        l = (int)strlen(seq_buf);
        !           248:        tlog(F111,"sending sequence ",seq_buf,(long) l);
        !           249:        signal(SIGALRM,scrtime);
        !           250:        if (!setjmp(alrmrng)) {
        !           251:            alarm(SND_ALRM);
        !           252:            if (!strcmp(seq_buf,"EOT")) {
        !           253:                ttoc(dopar('\004'));
        !           254:                if (scr_echo) conol("<EOT>");
        !           255:                if (seslog && duplex) if (zsout(ZSFILE,"<EOT>") < 0)
        !           256:                  seslog = 0;
        !           257:            } else if (!strcmp(seq_buf,"BREAK") ||
        !           258:                       !strcmp(seq_buf,"\\b") ||
        !           259:                       !strcmp(seq_buf,"\\B")) {
        !           260:                ttsndb();
        !           261:                if (scr_echo) conol("<BREAK>");
        !           262:                if (seslog) if (zsout(ZSFILE,"{BREAK}") < 0) seslog = 0;
        !           263:            } else {
        !           264:                if (l > 0) {
        !           265:                    for ( sb = seq_buf; *sb; sb++)
        !           266:                      *sb = dopar(*sb); /* add parity */
        !           267:                    ttol((CHAR *)seq_buf,l); /* send it */
        !           268:                    if (scr_echo && duplex) conxo(l,seq_buf);
        !           269:                    if (seslog && duplex) /* log it */
        !           270:                      if (zsout(ZSFILE,seq_buf) < 0)
        !           271:                        seslog=0;
        !           272:                }
        !           273:                if (!no_cr) {
        !           274:                    ttoc( dopar(CR) );
        !           275:                    if (seslog && duplex)
        !           276:                      if (zchout(ZSFILE,dopar(CR)) < 0)
        !           277:                        seslog = 0;
        !           278:                }
        !           279:            }
        !           280:        } else oseqret |= -1;           /* else -- alarm rang */
        !           281:        alarm(0);
        !           282:        signal(SIGALRM,SIG_IGN);
        !           283:        if (!delay) return(oseqret);
        !           284: #ifndef MAC
        !           285:        msleep(DEL_MSEC);               /* delay, loop to next send */
        !           286: #endif /* MAC */
        !           287:     }
        !           288: }
        !           289: 
        !           290: /*  L O G I N  --  Login to remote system */
        !           291: 
        !           292: int
        !           293: dologin(cmdstr) char *cmdstr; {
        !           294: 
        !           295:        SIGTYP (*savealm)();            /* save incoming alarm function */
        !           296:        char *e;
        !           297: 
        !           298:        s = cmdstr;                     /* make global to ckuscr.c */
        !           299: 
        !           300:        tlog(F100,loginv,"",0L);
        !           301: 
        !           302:        if (speed < 0L) speed = ttgspd();
        !           303:        if (ttopen(ttname,&local,mdmtyp,0) < 0) {
        !           304:            sprintf(seq_buf,"Sorry, can't open %s",ttname);
        !           305:            perror(seq_buf);
        !           306:            return(0);
        !           307:        }
        !           308:        /* Whether to echo script cmds */
        !           309:        scr_echo = (!quiet && !backgrd && secho);
        !           310: #ifndef NOSPL
        !           311:        if (scr_echo && cmdlvl > 1) {
        !           312:            if (cmdstk[cmdlvl].src == CMD_TF)
        !           313:              scr_echo = techo;
        !           314:            if (cmdstk[cmdlvl].src == CMD_MD)
        !           315:              scr_echo = mecho;
        !           316:        }
        !           317: #endif /* NOSPL */
        !           318:        if (scr_echo) {
        !           319: #ifdef NETCONN
        !           320:            if (network)
        !           321:              printf("Executing SCRIPT to host %s.\n",ttname);
        !           322:            else
        !           323: #endif /* NETCONN */
        !           324:              printf("Executing SCRIPT through %s, speed %ld.\n",ttname,speed);
        !           325:        }
        !           326:        *seq_buf=0;
        !           327:        for (e = s; *e; e++) strcat(seq_buf, dbchr(*e) );
        !           328: #ifdef COMMENT
        !           329: /* Skip this because it tends to contain a password... */
        !           330:        if (scr_echo) printf("SCRIPT string: %s\n",seq_buf);
        !           331: #endif /* COMMENT */
        !           332:        tlog(F110,"SCRIPT string: ",seq_buf, 0L);
        !           333: 
        !           334: /* Condition console terminal and communication line */            
        !           335: 
        !           336:        if (ttvt(speed,flow) < 0) {
        !           337:            printf("Sorry, Can't condition communication line\n");
        !           338:            return(0);
        !           339:        }
        !           340:        /* Save initial timer interrupt value */
        !           341:        savealm = signal(SIGALRM,SIG_IGN);
        !           342: 
        !           343:        flushi();               /* flush stale input */
        !           344: 
        !           345: /* start expect - send sequence */
        !           346: 
        !           347:     while (*s) {               /* while not done with buffer */
        !           348: 
        !           349:        while (*s && isspace(*s)) s++;  /* skip over separating whitespaces */
        !           350:                                        /* gather up expect sequence */
        !           351:        got_it = 0;
        !           352:        recvseq();
        !           353: 
        !           354:        while (!got_it) {               /* Have it yet? */
        !           355:            if (*s++ != '-')            /* No, is there a conditional send? */
        !           356:              goto failret;             /* No, return failure */
        !           357:            flushi();                   /* Yes, flush out input buffer */
        !           358:            if (outseq())               /* If unable to send, */
        !           359:              goto failret;             /* return failure. */
        !           360:            if (*s++ != '-')            /* If no conditional response here, */
        !           361:              goto failret;             /* return failure. */
        !           362:            recvseq();                  /* All OK, read response from host. */
        !           363:        }                               /* Loop back and check got_it */
        !           364: 
        !           365:        while (*s && !isspace(*s++) ) ; /* Skip over conditionals */
        !           366:        while (*s && isspace(*s)) s++;  /* Skip over separating whitespaces */
        !           367:        flushi();                       /* Flush */
        !           368:        if (*s) if (outseq()) goto failret; /* If any */
        !           369:     }
        !           370:     signal(SIGALRM,savealm);
        !           371:     if (scr_echo) printf("Script successful.\n");
        !           372:     tlog(F100,"Script successful.","",0L);
        !           373:     return(1);
        !           374: 
        !           375: failret:
        !           376:     signal(SIGALRM,savealm);
        !           377:     if (scr_echo) printf("Sorry, script failed\n");
        !           378:     tlog(F100,"Script failed","",0L);
        !           379:     return(0);
        !           380: }
        !           381: 
        !           382: /*  F L U S H I  --  Flush, but log, input buffer  */
        !           383: 
        !           384: VOID
        !           385: flushi() {
        !           386:     int n;
        !           387:     if (seslog) {                      /* Logging session? */
        !           388:         n = ttchk();                   /* Yes, anything in buffer? */
        !           389:         if (n > 0) {                   /* If so, */
        !           390:            if (n > SBUFL) n = SBUFL;   /* make sure not too much, */
        !           391:            n = ttxin(n,(CHAR *)fls_buf); /* then read it, */
        !           392:            if (n > 0) if (zsout(ZSFILE,fls_buf) < 0) seslog = 0;
        !           393:        }
        !           394:     } else ttflui();                   /* Otherwise just flush. */
        !           395: }
        !           396: 
        !           397: #ifdef MAC
        !           398: alarm (s) int s; {                     /* Fix this later */
        !           399: }
        !           400: #endif /* MAC */
        !           401: #else
        !           402: char *loginv = "Script Command Disabled";
        !           403: #endif /* NOSCRIPT */
        !           404: #endif /* NOICP */

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